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Soundness Verification of Unit 4 Reactor Building at Fukushima Daiichi Nuclear Power Station - May 16, 2012
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Sat, 2012-05-19 11:49 — Kathy Gilbeaux
Tokyo Electric Power Company (TEPCO) - May 16, 2012
1. Purpose of Soundness Inspection
In response to the concern that Unit 4 spent fuel pool may collapse,
we have provided the explanations below to prove its soundness.
We will continue our regular inspection 4 times a year to ensure
soundness until the fuel is removed.
- 1. We have confirmed that the building has not tilted by measuring the distance
between the water surface of the spent fuel pool and the floor surface of the
building.
- 2. Our analysis result shows that the reactor building including the spent fuel
pool will not collapse even if an earthquake equivalent to the Tohoku-Pacific
Ocean Earthquake (seismic intensity 6) occurs in the area.
- 3. The seismic safety margin has improved by more than 20% by reinforcing
the bottom of the spent fuel pool.
- 4. Regular inspection (4 times a year) is done to confirm the soundness of the
reactor building and the spent fuel pool.
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